Hey All;

So I finally got this little 90cc quad running and in the back yard for days it's been running fine... I bring it out with the boys this afternoon to a near by trail - little and I mean little water and not long after it had no power kept dieing on me spitting and sputtering then just conq out..

I'm assuming fuel issue I took off the carb there was traces of dirt in there.. cleaned it out put it back together same thing... I noticed that the fuel filter was full of rust this machine sat for some time... so I replaced that - still the same so my question is now what - how I get it back to what it was and how do I proof it so dirt (if thats what others things the issue is) dont get in there again..

thanks

 

Is FRUSTRADED a combination of Frustrated and Retarded?

 

It really amazes me how this board is made for people to get HELP and/or ADVISE but smart asses troll it all day long and leave sub human responses. Comments that are not in a helpful manner are not needed and I hope a board moderator deletes your account for being an ***.....

just my $0.02

Tired of seeing stupid comments when people are asking for help.

In the meantime Desjardins2012, remove the carb again and make sure it's very clean. Also pull out both jets and make sure you can see daylight when looking through them end to end. If you have a torch tip cleaner they work great to clean jets. Replace the fuel filter and check that the carb floats are not sticking as well.

The rust on the air cleaner could be bad news if the engine sucked any pieces into the head and wedged them next to the cylinder walls. Hope for the best I guess. remove the air cleaner and carry it to your local shop to match the throat size and try the bike again. If the filter is a foam style that is in the open make sure it has oil on it as that will help to repel the water.

 

Thanks for the defense quick typo as mentioned I was very anxious coming back from a ride with the little guys that ended 5 min later.... seeing this thing was running fine in the backyard..

so back to the issue; it's my understanding that these little atv's are not really setup right from get go, would it be in my best interest to get a pro to set the carb? or is thing something I can tinker with myself?

I'm going to get a new fuel filter tomorrow is a generic one ok? and when you say air cleaner?? is that the air filter at the read or the carb you refer too?

also would this issue involve bad spark?

one thing I noticed is on this atv it has a valve to shut off the fuel HOWEVER who ever owned it before me took that apart it now goes from the fuel tank to a filter to the carb bypassing the shutoff valve should I worry about that or atleast replace the original system and put the valve back in the loop?

so from what I have explained with the atv dying and having no power does this tell you the fuel issue it's not something else? I felt like something was blocking something..

 

I am no expert on these matters but i will share what I know.

so back to the issue; it's my understanding that these little atv's are not
really setup right from get go, would it be in my best interest to get a pro to set the carb? or is thing something I can tinker with myself? There is a sticky at the top of this forum that addresses this issue, here is the thread link. http://forums.atvconnection.com/chin...-sunl-etc.html

I'm going to get a new fuel filter tomorrow is a generic one ok? Yesand when you say air cleaner?? is that the air filter at the read or the carb you refer too? Again yes, the if it faces backwards then that is actually the front of the carb

also would this issue involve bad spark? It could, just remove the plug and ground it against the engine block, crank the motor and see if you have a nice spark. Plugs are cheap. Make sure the run switch is on.

Also, these Chinese quads come with lots of stupid little things that can cause issues. If your quad has a pull string kill switch by the rear grab bar make sure its on tight. It will be a small round rubber plug over the opening. You may also have another tether type kill switch on the left side handlebar, make sure it's tight as well.

one thing I noticed is on this atv it has a valve to shut off the fuel HOWEVER who ever owned it before me took that apart it now goes from the fuel tank to a filter to the carb bypassing the shutoff valve should I worry about that or atleast replace the original system and put the valve back in the loop? Personally I would put the valve back into the mix, if you remove the carb all your gas will just run out you can also turn the fuel off and run the carb dry if you need to store the quad for any length of time.

so from what I have explained with the atv dying and having no power does this tell you the fuel issue it's not something else? I felt like something was blocking something.. It sounds to me like something got into the jets and is blocking, it could also be that the carb is running too lean and the bike isn't getting enough fuel now that its out of the backyard.

Again, I am no expert here and I have only been doing the ATV thing for about 4 months now. I read these forums every night and they are a plethora of information.

 

another issue to check would be dirt in the tank.. especially since someone has messed with it for some reason

if there is dirt or rust in the tank it can clog the carb as fast as you can clean it, even with a fuel filter.. the passages in the pilot jet are so miniscule it doent take much to clog it

I had that problem on a dirtbike that I bought cheap, I kept cleaning the carb and changing the fuel filter to no avail.. flushed out the tank and the bike has run great since

 

Ya, I suspected that also and the next step is going to be to empty the tank - wash it out - dry it out, put a new filter on, reconnect the valve in the loop and clean the carb YET AGAIN

now with that all being true so dirt or plugged jets this would def cause no power, spitting and sputtering?

 

I'm not sure, theoretically it could.. if the pilot jet was clogged it would be super lean. However on the bike I had that problem with it just wouldn't start or idle.. I had to spray starting fluid in the carb for the bike to start and keep spraying it every few seconds to keep it alive, it was just too fuel starved to run without it

if you know there is rust in there, eventually it will be a problem anyway, so its where I would start.

After that I might change the pulg and coil/wire.. they are cheap enough and a weak spark could definately cause it.. plugs are ~$2 and a coil with wire may be $20. Have you checked the plug to see if it is sooty or white?

The water could have done something, but I have had mine deep enough in streams to kill it and it was fine after a bit.. I just kept running the starter and once it started it wouldn't rev, it just kept spitting and bucking.. I was afraid I had bent a valve or something, but after letting it run its course it just started running fine.

it also could have jumped timing, although I think that is highly unlikely (the P.O. would have had to leave the cam tensioner loose or something), it is easy enough to check..

speaking of cams, I just assumed it was a 4 stroke, I suppose with a motor that small it may be a 2 stroke?

 

I believe it is 2 stroke - I'm only assuming also though - be checking somethings tonight and report back

 

I dont have any 2 stroke experiance, but one of my buddies kid has a suzuki lt80 2 stroke.. when she just putzes around in it the plug foulsand it runs like crap.. she can run it full out all day and it runs like a champ, but partial throttle milling around ruins the plugs quickly..

one time I tired cleaning one for him as good as I could (out camping in the woods) with carb cleaner and rags and it looked good, but the quad wouldnt run with it - wouldnt even start in fact.. we dropped a new one in and it fired right up. Weirdest thing to me, makes me glad all my toys are 4 stroke.